Comments

I liked Marco Pivetta's talk a lot, mainly for the reason that I was able to enjoy and extract new useful stuff from it even though it was not my first time attending it. Good balance between theory and practice, had a live demo, learned new stuff from the questions and answers.

Good, solid and enjoyable talk. Learned a few things and am looking forward to using the new and shiny L2 cache.
I feel the same as one of the writers of one of the other comments though: was expecting more in depth stuff about improving performance.
For those that already know or use doctrine the introduction on what doctrine/ORM is, was a bit long.

Now here's a talk I would recommend to everyone. This was not a hey-look-how-great-doctrine-is talk, but an honest talk about when and when not to use an ORM. You gave a great explanation of what the new L2 cache of Doctrine, which looks really promising.

I unfortunately didnt have an opportunity to ask him later to be more clear on some L2 cache implementation details but will check out docs to see it (I'm not sure if #1) caches are entity or result based, #2) will find all active users repository use caches or SQL to get the results out)